The KG510/KG510H down the hole dril rig for open use is an improved device in compliance with nalional regulaions on diesel-engineemissions, Equipped with the Yuchai four-cylinder engine (China ll), the drill ig meets national standards for emissions and environmentThe folding frame track and four-wheel drive are adopted; and track leveling and the waking motor of plunger piston improve the workingpressure and climbing capacity. The expanded pitch and lifing-arm hydraulic cyinder enable it to meet the requirements of limiingposition. The double-motor rotation increases the rotary torque and revolving speed; and the lifting hydraulic cylinder and chain areexpanded to promote the lifing force and reliabily. The dust collecor is enlarged to produce a beller eflect on dust collecion. Thethickened profle folder is used for the housing, thus improving its level of intensity and rigidity; and the additional ring makes handing andlifting convenient.